The FSB revealed the activities of an intelligence network of Polish special services in the Kaliningrad region.
The two intelligence officers collected data on military installations, as well as the socioeconomic situation, immigration and social policy in the region, the department said. Both were arrested. Criminal cases of espionage were opened.
Another 7 Polish citizens and three Russians were warned against the inadmissibility of espionage and treason, and Poles were refused entry to the Russian Federation, the FSB reports.